摘要
研究了深圳福田红树林无瓣海桑与海桑群落对重金属Cu、Pb、Zn、Cr、Ni元素的吸收、累积、分布和循环 .结果表明 ,该林地表层土壤 (0～ 3 0cm)Cu、Pb、Zn、Cr、Ni元素的储量关系为Zn >Pb >Ni>Cr>Cu ;群落中 3种植物对土壤中 5种重金属元素富集能力的大小依次为海桑 >无瓣海桑 >秋茄 .该群落Cu、Pb、Zn、Cr、Ni的现存累积量分别为 :2 3 0 1 9 61、2 3 42 9 65、1 1 7870 41、683 5 79、1 2 995 0 8μg/m2 ;年吸收量分别为 :65 92 2 0、2 664 77、2 41 2 3 5 6、85 3 2 5、1 990 86μg/m2 ;年归还量分别为 :3 1 79 5 0、1 3 0 0 64、840 1 3 1、3 98 99、646 2 0 μg/m2 ;年储存量分别为 :3 41 3 0 7、1 3 64 1 3、1 5 72 2 2 5、45 4 2 5、1 3 44 66μg/m2 ;周转期分别为 :8a、1 9a、1 5a、1 8a、2 1a.
The absorption, accumulation, distribution and cycle of Cu, Pb, Zn, Cr and Ni in S.apetala and S.caseolaris Mangrove Community at Futian Mangrove Nature Reserve of Shenzhen were studied. The results showed that the Cu, Pb, Zn, Cr and Ni contents in forest soil were increased from bottom to surface layer, and the storage of the five heavy metals in the surface layer(depth 0～30cm) was Zn>Pb>Ni>Cr>Cu. The concentration ability was S.caseolaris>S.apetala>K.candel. The existing accumulation of Cu,Pb,Zn,Cr and Ni in the community were respectively 23019 61μg/m 2,23429 65μg/m 2,117870 41μg/m 2,6835 79μg/m 2,12995 08 μg/m 2.The annual absorption were 6592 20μg/m 2,2664 77μg/m 2,24123 56μg/m 2,853 25μg/m 2,1990 86μg/m 2,respectively.The annual return were 3179 50μg/m 2,1300 64μg/m 2,8401 31μg/m 2,398 99μg/m 2,646 20μg/m 2, respectively. The annual net retention accumulation of Cu, Pb, Zn, Cr and Ni in the community were 3413 07μg/m 2,1364 13μg/m 2,15722 25μg/m 2,454 25μg/m 2,1344 66μg/m 2. The turn over period of Cu, Pb, Zn, Cr and Ni were 8,19,15,18 and 21 years.
出处
《环境科学》
EI
CAS
CSCD
北大核心
2002年第4期81-88,共8页
Environmental Science
基金
国家"九五"科技攻关项目 (96 0 0 7 0 3 0 4 )
国家自然科学基金重大项目 (39899370 )
国家自然科学基金项目 (30 0 70 14 4 )
深圳市科技局项目 (99 1 33)
